It would be good to be able to the last family types in a project or project template to help consolidate the list of family types in the project. Working for a firm that only does Mechanical Pipe and Plumbing work, there's no need for us to have Architectural components, such as Ceilings, Railings, and Stairs in the project template, so it would be good to be able to remove these entirely from the list of families present in the template.